MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4f35ab87754acc5f4ec939fc2187279aba6c5732d7d12c3adce7991e13a8a587. While MalwareBazaar tries to identify whether the sample provided is malicious or not, there is no guarantee that a sample in MalwareBazaar is malicious.

Database Entry


MassLogger


Vendor detections: 15


Intelligence 15 IOCs YARA 21 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4f35ab87754acc5f4ec939fc2187279aba6c5732d7d12c3adce7991e13a8a587
SHA3-384 hash: 28b1e2c6b3e85f9afffae57a7a138d3e5a5573ab64d12350c2d1e63ac230d74429cdb157b629db1531f2902706cc1be2
SHA1 hash: c6628b2e341bfad917829145b93c3dfea146c9bf
MD5 hash: ccce8d66486303a4aa1de11eeb36b22a
humanhash: wyoming-happy-oklahoma-charlie
File name:Inquiry No. I-25-0001257-PDF.exe
Download: download sample
Signature MassLogger
Create hunting rule
File size:975'872 bytes
First seen:2025-06-16 11:45:12 UTC
Last seen:2025-06-23 09:12:19 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 3d95adbf13bbe79dc24dccb401c12091 (881 x AgentTesla, 737 x FormBook, 236 x SnakeKeylogger)
ssdeep 12288:5tb20Qc3lT7af41ePBRYuQLKpqeUhbTv5OFgNuPPpHSgad7+Iqrhqx3sZsf6A:5tb20pkaCqT5TBWgNQ7ax+Bcxcef6A
Threatray 2'799 similar samples on MalwareBazaar
TLSH T17825BE1373DD8361C7B25273BA25B701AEBF782506B5F96B2FD4093DE920122521EA73
TrID 40.3% (.EXE) Win64 Executable (generic) (10522/11/4)
19.3% (.EXE) Win16 NE executable (generic) (5038/12/1)
17.2% (.EXE) Win32 Executable (generic) (4504/4/1)
7.7% (.EXE) OS/2 Executable (generic) (2029/13)
7.6% (.EXE) Generic Win/DOS Executable (2002/3)
Magika pebin
dhash icon aae2f3e38383b629 (2'034 x Formbook, 1'183 x CredentialFlusher, 666 x AgentTesla)
Reporter adrian__luca
Tags:exe MassLogger

Intelligence

File Origin
# of uploads :
2
# of downloads :
401
Origin country :
HU HU
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Inquiry No. I-25-0001257-PDF.exe
Verdict:
No threats detected
Analysis date:
2025-06-16 12:06:53 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/de7b5cc2-1938-4a54-b49a-9bcb8ee609cb

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/9592/
Detection(s):
SecuriteInfo.com.PSW.Agent.BORA.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
90.2%
Link:
https://cyber-fortress.com/docs/result/index.php?id=685003ec8bd5d68a12e8cef0
Tags:
autoit emotet
Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending an HTTP GET request
Sending a custom TCP request
Reading critical registry keys
Creating a window
Creating a file in the %temp% directory
Launching a process
Сreating synchronization primitives
DNS request
Connection attempt
Unauthorized injection to a system process
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/4f35ab87754acc5f4ec939fc2187279aba6c5732d7d12c3adce7991e13a8a587
Malware family:
Snake Keylogger
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/e6557b80-d76e-469c-95f9-f80410adca2d
Result
Threat name:
MSIL Logger, MassLogger RAT
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1715385
Signature
.NET source code references suspicious native API functions
Binary is likely a compiled AutoIt script file
Contains functionality to log keystrokes (.Net Source)
Found malware configuration
Joe Sandbox ML detected suspicious sample
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
Multi AV Scanner detection for submitted file
Switches to a custom stack to bypass stack traces
Tries to detect the country of the analysis system (by using the IP)
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Writes to foreign memory regions
Yara detected MassLogger RAT
Yara detected MSIL Logger
Yara detected Telegram RAT
Behaviour
Behavior Graph:
Download SVG
Score:
99%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/4f35ab87754acc5f4ec939fc2187279aba6c5732d7d12c3adce7991e13a8a587
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/4f35ab87754acc5f4ec939fc2187279aba6c5732d7d12c3adce7991e13a8a587/
Threat name:
Win32.Trojan.AutoitInject
Create hunting rule
Status:
Malicious
First seen:
2025-06-13 18:51:51 UTC
File Type:
PE (Exe)
Extracted files:
24
AV detection:
16 of 24 (66.67%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=j422xb3vjlgf6twjhh6cdbzhtk5gyvzs27isyow446mr4e5iuwdq._file
Verdict:
malicious
Label(s):
unc_loader_036
Create hunting rule
autoit
Create hunting rule
novastealer
Create hunting rule
Similar samples:
4d8477bb47317c981e8c8f103f4596afa3e6b126937528e09285e0570c5a7297
MassLogger
6b4806d8340c94dbe9879d05144f0bd492ce7614bf7827764f9c8f4094c12687
MassLogger
9c7a2e9b06bfe9bc9a56105abcbcdb0b59a26071be4debe8e2a5581c832c6e96
MassLogger
9ce56eb86c2bfcfcbca94a27e0632fcfda0660a44c6962c68d1ad02355a1850e
MassLogger
+ 2'789 additional samples on MalwareBazaar
Result
Malware family:
masslogger
Create hunting rule
Score:
  10/10
Tags:
family:masslogger collection discovery spyware stealer
Link:
https://tria.ge/reports/250616-nw4b5shj7v/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
outlook_office_path
outlook_win_path
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Accesses Microsoft Outlook profiles
Looks up external IP address via web service
MassLogger
Masslogger family
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/39d794bf-1c08-4446-b453-6f6528ad4ed2
Unpacked files
SH256 hash:
4f35ab87754acc5f4ec939fc2187279aba6c5732d7d12c3adce7991e13a8a587
MD5 hash:
ccce8d66486303a4aa1de11eeb36b22a
SHA1 hash:
c6628b2e341bfad917829145b93c3dfea146c9bf
Link:
https://www.unpac.me/results/57f5dab5-d493-4f3c-89ae-9daccc48aab9/
SH256 hash:
3d73ca5b8fb9d4b58ae8deadde9816c61aa662ce5552cf2a1768ca75ba287b4a
MD5 hash:
cca03c810ef4e120a068da5bb05c059c
SHA1 hash:
12da52535f94b492e79775c3df5b8eedffc3365c
Detections:
win_404keylogger_g1
Create hunting rule
win_masslogger_w0
Create hunting rule
MAL_Envrial_Jan18_1
Create hunting rule
INDICATOR_SUSPICIOUS_Binary_References_Browsers
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_TelegramChatBot
Create hunting rule
Link:
https://www.unpac.me/results/57f5dab5-d493-4f3c-89ae-9daccc48aab9/
Parent samples :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 family:
PrivateLogger
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/4f35ab87754a/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/4f35ab87754acc5f4ec939fc2187279aba6c5732d7d12c3adce7991e13a8a587

YARA Signatures

MalwareBazaar uses YARA rules from several public and non-public repositories, such as YARAhub and Malpedia. Those are being matched against malware samples uploaded to MalwareBazaar as well as against any suspicious process dumps they may create. Please note that only results from TLP:CLEAR rules are being displayed.

Rule name:AutoIT_Compiled
Create hunting rule
Author:@bartblaze
Description:Identifies compiled AutoIT script (as EXE). This rule by itself does NOT necessarily mean the detected file is malicious.
Rule name:crime_snake_keylogger
Create hunting rule
Author:Rony (r0ny_123)
Description:Detects Snake keylogger payload
Rule name:DebuggerCheck__API
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:golang_bin_JCorn_CSC846
Create hunting rule
Author:Justin Cornwell
Description:CSC-846 Golang detection ruleset
Rule name:growtopia
Create hunting rule
Author:Michelle Khalil
Description:This rule detects unpacked growtopia stealer malware samples.
Rule name:INDICATOR_SUSPICIOUS_Binary_References_Browsers
Create hunting rule
Author:ditekSHen
Description:Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers.
Rule name:INDICATOR_SUSPICIOUS_EXE_TelegramChatBot
Create hunting rule
Author:ditekSHen
Description:Detects executables using Telegram Chat Bot
Rule name:MAL_Envrial_Jan18_1
Create hunting rule
Author:Florian Roth (Nextron Systems)
Description:Detects Encrial credential stealer malware
Reference:https://twitter.com/malwrhunterteam/status/953313514629853184
Rule name:MAL_Envrial_Jan18_1_RID2D8C
Create hunting rule
Author:Florian Roth
Description:Detects Encrial credential stealer malware
Reference:https://twitter.com/malwrhunterteam/status/953313514629853184
Rule name:masslogger_gcch
Create hunting rule
Author:govcert_ch
Rule name:NET
Create hunting rule
Author:malware-lu
Rule name:NETexecutableMicrosoft
Create hunting rule
Author:malware-lu
Rule name:pe_imphash
Create hunting rule
Rule name:RANSOMWARE
Create hunting rule
Author:ToroGuitar
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:Sus_CMD_Powershell_Usage
Create hunting rule
Author:XiAnzheng
Description:May Contain(Obfuscated or no) Powershell or CMD Command that can be abused by threat actor(can create FP)
Rule name:Sus_Obf_Enc_Spoof_Hide_PE
Create hunting rule
Author:XiAnzheng
Description:Check for Overlay, Obfuscating, Encrypting, Spoofing, Hiding, or Entropy Technique(can create FP)
Rule name:telegram_bot_api
Create hunting rule
Author:rectifyq
Description:Detects file containing Telegram Bot API
Rule name:Windows_Trojan_SnakeKeylogger_af3faa65
Create hunting rule
Author:Elastic Security
Rule name:win_masslogger_w0
Create hunting rule
Author:govcert_ch
Rule name:YahLover
Create hunting rule
Author:Kevin Falcoz
Description:YahLover

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Malspam

MassLogger

Executable exe 4f35ab87754acc5f4ec939fc2187279aba6c5732d7d12c3adce7991e13a8a587

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/9592/

BLint

The following table provides more information about this file using BLint. BLint is a Binary Linter to check the security properties, and capabilities in executables.

Findings
IDTitleSeverity
CHECK_AUTHENTICODEMissing Authenticodehigh
CHECK_DLL_CHARACTERISTICSMissing dll Security Characteristics (HIGH_ENTROPY_VA)high
CHECK_NXMissing Non-Executable Memory Protectioncritical
Reviews
IDCapabilitiesEvidence
AUTH_APIManipulates User AuthorizationADVAPI32.dll::AllocateAndInitializeSid
ADVAPI32.dll::CopySid
ADVAPI32.dll::FreeSid
ADVAPI32.dll::GetLengthSid
ADVAPI32.dll::GetTokenInformation
ADVAPI32.dll::GetAce
COM_BASE_APICan Download & Execute componentsole32.dll::CLSIDFromProgID
ole32.dll::CoCreateInstance
ole32.dll::CoCreateInstanceEx
ole32.dll::CoInitializeSecurity
ole32.dll::CreateStreamOnHGlobal
MULTIMEDIA_APICan Play MultimediaWINMM.dll::mciSendStringW
WINMM.dll::timeGetTime
WINMM.dll::waveOutSetVolume
SECURITY_BASE_APIUses Security Base APIADVAPI32.dll::AddAce
ADVAPI32.dll::AdjustTokenPrivileges
ADVAPI32.dll::CheckTokenMembership
ADVAPI32.dll::DuplicateTokenEx
ADVAPI32.dll::GetAclInformation
ADVAPI32.dll::GetSecurityDescriptorDacl
SHELL_APIManipulates System ShellSHELL32.dll::ShellExecuteExW
SHELL32.dll::ShellExecuteW
SHELL32.dll::SHFileOperationW
WIN32_PROCESS_APICan Create Process and ThreadsADVAPI32.dll::CreateProcessAsUserW
KERNEL32.dll::CreateProcessW
ADVAPI32.dll::CreateProcessWithLogonW
KERNEL32.dll::OpenProcess
ADVAPI32.dll::OpenProcessToken
ADVAPI32.dll::OpenThreadToken
WIN_BASE_APIUses Win Base APIKERNEL32.dll::TerminateProcess
KERNEL32.dll::SetSystemPowerState
KERNEL32.dll::LoadLibraryA
KERNEL32.dll::LoadLibraryExW
KERNEL32.dll::LoadLibraryW
KERNEL32.dll::GetDriveTypeW
WIN_BASE_EXEC_APICan Execute other programsKERNEL32.dll::WriteConsoleW
KERNEL32.dll::ReadConsoleW
KERNEL32.dll::SetStdHandle
KERNEL32.dll::GetConsoleCP
KERNEL32.dll::GetConsoleMode
WIN_BASE_IO_APICan Create FilesKERNEL32.dll::CopyFileW
KERNEL32.dll::CreateDirectoryW
KERNEL32.dll::CreateHardLinkW
IPHLPAPI.DLL::IcmpCreateFile
KERNEL32.dll::CreateFileW
KERNEL32.dll::DeleteFileW
WIN_BASE_USER_APIRetrieves Account InformationKERNEL32.dll::GetComputerNameW
ADVAPI32.dll::GetUserNameW
ADVAPI32.dll::LogonUserW
ADVAPI32.dll::LookupPrivilegeValueW
WIN_NETWORK_APISupports Windows NetworkingMPR.dll::WNetAddConnection2W
MPR.dll::WNetUseConnectionW
WIN_REG_APICan Manipulate Windows RegistryADVAPI32.dll::RegConnectRegistryW
ADVAPI32.dll::RegCreateKeyExW
ADVAPI32.dll::RegDeleteKeyW
ADVAPI32.dll::RegOpenKeyExW
ADVAPI32.dll::RegQueryValueExW
ADVAPI32.dll::RegSetValueExW
WIN_USER_APIPerforms GUI ActionsUSER32.dll::BlockInput
USER32.dll::CloseDesktop
USER32.dll::CreateMenu
USER32.dll::EmptyClipboard
USER32.dll::FindWindowExW
USER32.dll::FindWindowW

Comments